diff --git a/helpers/search_helper.rb b/helpers/search_helper.rb
index 4e2dee3c..80eec4cc 100644
--- a/helpers/search_helper.rb
+++ b/helpers/search_helper.rb
@@ -357,7 +357,7 @@ def populate_classes_from_search(classes, ontology_acronyms=nil)
           doc[:submission] = old_class.submission
           doc[:properties] = MultiJson.load(doc.delete(:propertyRaw)) if include_param_contains?(:properties)
           instance = LinkedData::Models::Class.read_only(doc)
-          instance.prefLabel =  instance.prefLabel.first if instance.prefLabel.is_a?(Array)
+          filter_language_attributes(@params, instance)
           classes_hash[ont_uri_class_uri] = instance
         end
 
diff --git a/test/controllers/test_annotator_controller.rb b/test/controllers/test_annotator_controller.rb
index 55d8fb66..53d7bb8a 100644
--- a/test/controllers/test_annotator_controller.rb
+++ b/test/controllers/test_annotator_controller.rb
@@ -267,14 +267,14 @@ def test_default_properties_output
     assert_equal 9, annotations.length
     annotations.sort! { |a,b| a["annotatedClass"]["prefLabel"].first.downcase <=> b["annotatedClass"]["prefLabel"].first.downcase }
     assert_equal "http://bioontology.org/ontologies/BiomedicalResourceOntology.owl#Aggregate_Human_Data", annotations.first["annotatedClass"]["@id"]
-    assert_equal "Aggregate Human Data", Array(annotations.first["annotatedClass"]["prefLabel"]).first
+    assert_equal "Aggregate Human Data", annotations.first["annotatedClass"]["prefLabel"]
 
     params = {text: text, include: "prefLabel,definition"}
     get "/annotator", params
     assert last_response.ok?
     annotations = MultiJson.load(last_response.body)
     assert_equal 9, annotations.length
-    annotations.sort! { |a,b| Array(a["annotatedClass"]["prefLabel"]).first.downcase <=> Array(b["annotatedClass"]["prefLabel"]).first.downcase }
+    annotations.sort! { |a,b| a["annotatedClass"]["prefLabel"].downcase <=> b["annotatedClass"]["prefLabel"].downcase }
     assert_equal "http://bioontology.org/ontologies/BiomedicalResourceOntology.owl#Aggregate_Human_Data", annotations.first["annotatedClass"]["@id"]
     assert_equal ["A resource that provides data from clinical care that comprises combined data from multiple individual human subjects."], annotations.first["annotatedClass"]["definition"]
   end